I was on the Sam Houston National Forest cell earlier when it passed near Bryan, but let it go as it continued east into the more dense forests near I-45, so it's fitting that it would ramp up after I dropped off it. But man, once it was able to fully root down to the surface and take advantage of the low level shear, it took off. Probably needed the time for it to warm to >80ºF (82/71 at Huntsville the last hour, with dews as high as 75/76ºF just to the south) for it to overcome the low level lapse rates.